The add-on works great, very clean simple interface. But the upgraded version seems to be a scam. There doesn't seem to be any way for them to track who has paid and who has not. After sending money, I received no follow up email, no link to upgrade the add-on, no registration key. Just a receipt from Paypal and an add-on that does nothing more than it initially did.

Get the free version, but don't waste your money hoping for more.